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259137-26-3

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259137-26-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 259137-26-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,9,1,3 and 7 respectively; the second part has 2 digits, 2 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 259137-26:
(8*2)+(7*5)+(6*9)+(5*1)+(4*3)+(3*7)+(2*2)+(1*6)=153
153 % 10 = 3
So 259137-26-3 is a valid CAS Registry Number.

259137-26-3Relevant articles and documents

Reactions of 2,3-diaryl-1-methyl-4,5-dihydroimidazolium iodides with nucleophilic reagents

Xia, Chizhong,Hao, Junsheng,Tang, Yiqing,Ni, Yanping,Zhou, Peiwen

, p. 1457 - 1464 (2007/10/03)

2,3-Diaryl imidazolium salts, represented by 1 and 2, reacted with 2-ethanolamine or ethylenediamine to produce 2-aryl oxazolines or imidazolines 5-8 respectively. Their hydrolysis resulted in ring-opened ethylenediamine derivatives 9 and 10. The reduction of 1 and 2 produced partially reduced imidazolidines 11, 12 and 11 reacted further with tryptamine to provide 2,3,4,9-tetrahydro-1-phenyl 1H-pyrido[3,4-b]indole, 13. In all these reactions one-carbon units were successfully transferred to the nucleophilic acceptors, which mimic the one-carbon unit transfer function for tetrahydrofolate coenzymes.

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